REF5045ID

A voltage reference, also known as a reference voltage source, is a device that produces a constant output voltage determined by the temperature, voltage and current of an external power supply. The output voltage of a voltage reference is usually very stable, usually within 1 part per million (ppm) of the desired output voltage. Voltage references are often used in electrical systems to provide a stable reference voltage for calibration and other applications that require an accurate voltage source.

The REF5045ID is a high-accuracy, low-dropout voltage reference developed by Texas Instruments. It provides a voltage output that is linearly proportional to a 2.5-volt reference voltage. The device is pin-compatible with the REF5040 low-dropout voltage reference, and provides a higher accuracy than the REF5050ID reference.

The application field of the REF5045ID voltage reference is wide, and it can be used in many kinds of applications. It can be used in instrumentation, power supply design, ternary logic circuits (such as analogue-to-digital converters), and wherever a stable reference voltage is required. It is especially suitable for those applications where a very low-dropout voltage and high accuracy are required.

The REF5045ID voltage reference has many advantages over other voltage references, such as lower dropout voltage, lower bias current, higher accuracy, wider temperature range, smaller package and improved reliability. The device provides a low-voltage, low-output impedance, high-accuracy reference voltage source with very low-power requirements and high accuracy over temperature.

The working principle of the REF5045ID voltage reference is based on an NPN bipolar junction transistor. The voltage reference consists of a transistor, a resistor divider network and a voltage reference voltage output. The transistor has its base terminal connected to a resistor divider network and its collector terminal connected to a voltage reference voltage output.When the voltage reference is powered from an external power supply, the collector terminal of the transistor is connected to the reference voltage and the base terminal is connected to the resistor divider network. The transistor then adjusts its collector voltage to maintain the reference voltage. The reference voltage is then supplied to the output of the device.

The REF5045ID voltage reference is an excellent choice for applications that require high accuracy, low noise, and low power consumption. It offers the highest levels of accuracy and performance, and is suitable for a wide range of applications. In addition, the device is pin-compatible with the REF5040, making it easy to use in existing designs.